Use a string instead of a symbol for provider_job_id

Author: brendon

app/models/solid_queue/claimed_execution.rb

@@ -92,7 +92,7 @@ def failed_with(error)
 
   private
     def execute
-      ActiveJob::Base.execute(job.arguments.merge(provider_job_id: job.id))
+      ActiveJob::Base.execute(job.arguments.merge("provider_job_id" => job.id))
       Result.new(true, nil)
     rescue Exception => e
       Result.new(false, e)